William j



'gwn-neuem,

DODLEY. .4,Gas Retort L-id..

No. 236,999. vlmmited Jan." 25, 188|.

wnermar [UNITED STATES PATENT Ormes.

WILLIAM J. DOOLEY, OF NEW YORK, N. Y.

GAS-RETO RT LID.

SPECIFICATION forming part of Letters Patent No. 236,999, dated January 25, 1881.

Application tiled J une 3, 1880. (No model.)

To all whom it may concern:

' Be.it known that I, WILLIAM J. DOOLEY, of the city, county, and State of New York, have invented a new and useful Improvement in Gas-Retort Lids, of which the following is a specification, reference beinghad to the accompanying drawings, forming part of the same.

Figure l is a front end view of a gasretort mouthpiece and lid containing my invention, the lid being closed. Fig. 2 is a top view of same with a portion of the iange of the mouthpiece cut away. Fig. 3 is a front end view of same with the lid swung open, presenting to view the rear surface ofthe lid; and Fig. 4 is a central section ot' a detached part, particularly described hereinafter.

My invention relates to the securing of the lid or door to the mouth ofthe gas-retort, such as is ordinarily used in the manufacture of illuminating-gas 5 and it consists in the devices hereinafter described and claimed, whereby the lid is readily and conveniently closed and forced against the mouth-piece, so as to form a tight joint, and at pleasure readily and conveniently detached and removed or swung open.

A is the mouth-piece, similar to those in general use. Its form and construction being well known in the art, a description of them is unnecessary.

B is the lid, also of the usual form. It is hinged to the month-piece, as shown in the several igures,it being desirable that when the lid is swung against the mouth -piece to close it, contact between the lid and the mouthpiece entirely around the lid should take place at the same instant, and not at a single point rst; otherwise the point of iirst contact is liable to become worn, and thereby the gastight joint between the lid and mouth-piece be impaired. To secure this uniform contact I arrange for an adjustment of the lid on its hinge. This I do by forming the strap (l of the single hinge to which the lid is fastened of-two arms, a and b, the end of a. being screwed to the lid near the top and the end ot' b near the bottom. The opposite end of the strap is screwed to thelid at c. Small bosses are formed on the lid'under the ends of aand b and at c, for the strap to rest upon, and into which the screws enter, when, by the use of thin washers placed between the strap and the bosses, the lid may, it is evident, be adjusted on the hinge so that when swung to it will strike against the mouth -piece all around at the same instant.

I will now describe my peculiar devices by which I force the lid against the mouth-piece to make a tight joint.

d d are two lugs that project inward on opposite sides of the interior ot1 the mouth-piece. Near its mouth is a bar, D, so hinged t0 the rear face of the lid, as seen plainly in Fig. 2, that when allowed to swing downward it will be below the lugs d d. To the center of this bar is pivoted a rod, e, which passes through the lid, and is provided with a screw-thread and hand-nutf on itsouter end. The arrangement of the parts is such that when the bar D is dropped down and the lid swung against the mouth-piece the bar will pass under and to the rear ofthe lugs d d. .lhen by turning down the nutfand thus drawing the rod e out the bar D is swung upward and behind the lugs d d', so that its ends will engage the said lugs. By turning the said nut down still farther the lid is pressed forcibly against the mouth-piece. To release the lid it is only necessary to turn back the nut, when the bar will, by its own weight, drop down away from and below the lugs d d', when. the lid can be swung open.

It is evident that provision must be made for a slight vertical movement of the inner end of the rod e, which must rise and fall with the bar D as the latter swings on its hinges. To this end the hole in the lid through which the said rod passes is made large enough to permit such movement. A boss, g, is formed on the lid, the said hole passing through the boss. On the outer end of this boss is a semi-cylindrical concavity, into which fits a bushingpiece, h, that is convex on one face to it the boss and plane on the opposite face. The rod c passes through this bushing, and the handrnut f, which has on its inner face a boss to match the bushing, ts down upon the bushing. It is obvious that this arrangement of parts will permit the movement of the rod e before mentioned, and at the same time secure a gastight joint at the aperture in the lid through which the rod passes.

IOO

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The mouth'piece A, provided with the lugs d d', and the lid B, to the rear face of which is hinged the bar D, that has plvoted to it the screw-rod e, provided with the handnutf, the said bar being arranged to swing down below the said lugs by turning back the nutfand pushing in the rod e, and to be swung up behind the lugs d d and to engage therewith by turning down the said nut and thereby drawing said rod e out, all constructed and combined to operate as and for the purpose described.

2. The combination, with the lid B, of the WILLIAM J. DOOLEY.

Witnesses:

J. P. FITCH, WM. G. CONKLIN. 

